{"product_id":"o-ring-volute-hydropump","title":"Pentair O-Ring, Volute Hydropump","description":"\u003cp\u003eThe Pentair 352626 is the volute o-ring for Pac-Fab Hydropump pumps, referenced on older parts lists as an O-257. It is listed for the Hydropump 590 and 700 series.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere it sits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe ring seals the volute against the pump body. That joint is on the pressure side and on the suction path, so when the ring goes hard, flattens or splits you get one of two symptoms: water weeping from the seam while the pump runs, or a pump that will not hold prime because it is drawing air past the seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFitting\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eClean the groove and the mating face before the new ring goes in, and use a silicone based o-ring lubricant so it seats evenly instead of rolling as the volute is drawn up. If you have the pump apart for anything else, fit a fresh ring while it is open rather than reusing one that has already taken a set.\u003c\/p\u003e","brand":"Pentair","offers":[{"title":"Default Title","offer_id":48634920042708,"sku":"PAC-101-3061","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_77446a82-b261-4462-8104-bc92b6ac6d61.png?v=1788838844","url":"https:\/\/www.activepoolsupply.com\/products\/o-ring-volute-hydropump","provider":"Active Pool Supply","version":"1.0","type":"link"}